Thermostatically operated valve



De'c. 1, 1936. w. s. RooT, JR

' THERMOSTATICALLY oPERATEb VALVE Filed June 20, 1934 NVETOR. h/a/er Sabin Roof Jr.

' ATTORNEY.

Patented Dec.l l, 1936 UNITEDi STATES PATENT oFFic-E TnEaMosTA'rIcALLY oraaa'ran vALvE Walter Sabin Root, Jr., Cleveland, Ohio, assigner to The Bishop & Babcock Mfg. Company,

Cleveland, Ohio, a corporation of Ohio Application June 20, 1934, Serial No. 731,48'7

9 Claims. (Cl. 236-34) -This invention relates to thermcstatically opperiphery so that in an inclined position as illuserated valves, and particularly to thermostaticaltrated in Fig. 1 it may substantially close the ly operated valves for controlling the fiow rate passageway 6, and so that it may move to the of fluids in accordance with temperature thereof. dotted line position in which it is disposed gen- Itis an object of my invention to provide generally axially of the tubular passageway 6 to Y 5 erally an improved thermostatically operated permit maximum iiow rate therethrough. l valve device for controlling the flow rate of uid. Arms 8 and 9 of sheet metal are riveted as at Another object is to provide an improved ther- I 0 and I I, respectively, to relatively widely spaced mostatically operated valve device of the class portions of the bimetallic valve element 1. The

1o referred to having a flow controlling valve elearms 8 and 9 are substantially rigid and extend 10 ment which is itself of thermally responsive congenerally toward each other. `The `in ner ends struction. thereof. are provided respectively with pairs of y Another object is to provide a thermostaticalperforated ears, respectively, I2-I2 and I3-I3. ly operated valve device of the class referred to A pivot pin I4 is projected through the perforain which thermally effected movements of a thertions of the ears I2 and a pivot I5 through the 16 mostatic element are applied to valve operating perorations of the ears I3, the ears and perforapurposes by mechanism means in an improved tions being disposed so that the pivot pins I4 and I manner. I5 are substantially parallel and extend trans- Another object is to provide, in a thermostatversely across the passageway S generally at right ically operated valve construction. improved angles to the longitudinal axis thereof and 20 means for adjusting a flow controlling element spaced laterally therefrom, the pin I5 being farthereof to predetermined fluid temperatures. ther from the axis than the pin I4.

Other objects will be 'apparent to those skilled The opposite ends ofthe pins I4 and I5 are in the art to which my invention appertains. seated in and rigidly secured to heads I6 and I1,

My invention is fully disclosed in the following generally cylindrical in` form. Opposite wall 25 description taken in connection with the accomportions of the tube I are formed with outwardly panying drawing, in which:- projecting annular tubular projections I8 and Fig. 1 is a longitudinal sectional view of an I9 providing tubular bores 20 and 2l in which embodiment of my invention; bores the heads I6 and I1 rotatably fit, and the 3'0 Fig. `2 is a longitudinal elevational view with bores 20 and 2| are substantially coaxially 30 parts broken away for clearness, the view beingv aligned.

taken generally from the left-hand side of the One of the heads, such as the head I6, is proembodiment of Fig. l; vided with an outwardly open screw driver slot 22 Fig. 3 is a view illustrating an embodiment of by which it and the pins I4 and. I5 and the head my invention in a. modified form; I1 vmay be adjustably turned in the bores l'and 35 Fig. 4 is a fragmentary elevational view taken I9. from the right hand side of Fig. 2. i In the construction and assembly -of the de- Referring to the drawing, I have shown at I vice, the heads I6 and I1 are adjustably turned a main frame in the form of a tube providing to a suitable position to be described, by a screw longitudinally therethrough a tubular fluid pasdriver in the slot 22; and in their adjusted lposi- 40 sageway. The'embodiment of my invention of tions, the head I1 is rigidly fixed in the bore I9 Figs. l and 2 is contemplated to be employed to by solder or like securing and sealing material control vflaw 0f fluid through 9, conduit and suit- 23, and'then the bOIe 2| iS likewise Sealed With able means may be provided to connect the upper material such as solder 24 to secure the head and lower ends of the tube I in the conduit 9. I6 to the tube I and to seal the bore 20. By Where the conduit is a flexible hose, the upper this means the pins I4 and I5. are rigidly secured and lower ends of the tube I may be provided with to the tube I in predetermined adjusted positions outwardly projecting beads 3-3 over which porsuch as that indicated in Figs. 1 and 2. tions 4 and 5 of a hose line conduit may be tele' The above described adjustment is made at a scoped, so thatfluid, whether gaseous or liquid, predetermined temperature at' which -the bi- 50 iiowingthrough the hose line will flow through metallic valve element 1 is slightly warped with the tubular passageway 6 in the tube I. the convex side towards the pins I4 and I5 and A valve element 1 of bimetal is supported in with the periphery of the bimetallic element in the tubular passageway 6 in a manner to be deengagement with the wall of the passageway 6 scribed, and is generally planar with an elliptical as illustrated in Fig. l. The predetermined temu perature may be the temperature of iiuid at which it is desired that the passageway 6 will be entirely closed.

By means of the construction above described. upon a rise oi' temperature o! fluid, communicated to the bimetallic valve element 1, the valve element will warp to a greater degree. and reacting through thearms t and l upon the stationary pivot pins I4 and i6. will move generally clockwise as viewed in Fig. 1 with a generally pivotal movement around the pins Il and il to passageway-opening positions corresponding to temperature, the now-open or maximum warped position being indicated at 26 in dotted' lines. I'hus the valve element 1 will take up positions corresponding to temperature, entirely closing the passageway 6 at a predetermined low temperature and opening it the maximum amount at y through the passageway 6 shall attain a maximum at a predetermined high temperature and then be reduced upon further rise of temperature, this may be accomplished merely by omitting the stop 21 which will allow the thermostatic valve element 1 to move beyond the position 26.

The above described operation of the valve device is predicated upon the employment oi a bimetallic material for the element 1, the two metals having d iilerent coeillcients of thermal expansion, andwith the element so disposed that the material of greater expansion coeillcient is on the side of the element adjacent the pins Il and I5, which causes the valve element 1 to move from a position completely or greatly obstructing the passageway 6 to positionsvoi lesser obstruction. In some cases it may be desired that the valve element 1 shall operate in the opposite manner, that is to say, moving from a position o1' minimum obstruction of the passageway 6 to positions oi' greater obstruction uponl a rise` ottemperature of the iluid. In such cases it is only necessary to reverse the position of the bimetallic element 1, that is to say, disposing it with the material of lesser coemcient oi' expansion adjacent or facing the pivot pins I4 and I5. In such case, the heads I6 and I1 may initially be adjustedl to cause the valve element 1 to take up the dotted line position 26 at the predetermined minimum temperature, whereby upon a rise of temperature it will move from the position 26 to or toward the solid line position of Fig. l, ultimately entirely closing the passageway 6 when a predetermined higher temperature of fluid is reached.

In Fig. 3 I have illustrated the manner in which my invention may be embodied in a valve construction sometimes referred to as the immersion type, i. e., immersed in the fluid in a conduit system or conduit means as distinguished from the form of Fig. 1 in which the passageway 6 and tube form a part of the conduit itself. In this form, a tube |0| may Vbe provided having therein the valve elements and adjusting meansv therefor substantially the same as those described for Figs. 1 and 2; but the lower end of the tube |0| is provided with a laterally exaocaoso tending preferably annular flange |02 adapted to be clamped between two Joined portions oi' the conduit system. In the form illustrated, one said portion,v |03. may be a part oi a tank or box or reservoir or enlarged portion of a conduit system, and the other part |64 may be generally in the form oi' a tube or pipe secured to the porg tion |03 by a ilange |06 thereon-and screws |06 which lclamp the ange |06 to the conduit portion |03 withy the ilange |02 therebetween. 'I'he outer endoi' the conduit portion |04 may be provided with threads |01 by which it'may be connected to a continuation of the conduit system. Oi' course, the outer provided with beads such as the beads) of Fig. 1 or with other means-for connecting it to the conduit system therebeyond.

In either ot ture. l My invention is not ci' pivotally connected to the tube on spaced pivot end of the portion limited to the exact del tails oi construction shown and described and may axes supported stationary relative to the frame to cause the valve element to move concurrently longitudinally and transversely 'of the tube around the pivot axes upon bending to variably control ilow of iluid through the passageway responsive to changes oi' temperature of the iluid.

2. In a thermally responsive valve construction, a frame providing a tubular tluid ilow passageway, a bimetallic thermostatic element responsive to bend upon a change oi' temperature oi' iluid in the passageway and having spaced portions thereoi pivotally connectedto the tube on spaced pivot axes supported stationary relative to the frame, to cause the valve element to move concurrently transversely and longitudinally of the tube around the pivot axes upon bending to variably control ilow of fluid through the passageway responsive to changes of temperature o f the fluid.

3. In a thermally responsive valve construction. a frame comprising a iluld. ow conduit means, a thermostatic valve lelement bendable responsive to changes of temperature of iluid in the'conduit means. a pair of arms extending toward each other from spaced portions oi' the valve elementand on the same side thereof, a pair oi spaced pivot supports xed on'the frame pivv otally supporting the army ends. and constituting the sole support for the valve element in the conduit means and causing the valve element to move bodily upon bending to variably control iluid ilow rates through the conduit 'means in response to `changes oi' iluid temperature.

4. In a thermally responsive valve construction, a frame comprising a iluid flow conduit means, a buttery type valve element of thermostatic bimetal in the conduit means, a. pair oi arms extending toward each other from spaced portions of the valve element and on the same side thereof, a pair of spaced pivot supports xed on the ment pivotally supporting the arm ends and constituting the sole support for the valve and causing the valve element to move bodily upon bending thereof to variably control iiuid ilow through the conduit means in response to changes of y transversely and longitudinally of theconduit means to variably control iluid ilow rate through the conduit means' in response to changes of fluid temperature, and means to adjustably relatively rotate the pivot supports about an axis to adjust the position of the valve element for a given temperature.

6. In a thermostatically operated valve device, a frame comprising a tubular passageway, a pivoted valve element in the passageway bendable responsive to changes of temperature of iluid in the passageway, a pair of spaced pivot elements xedly` supported on the frame and extending transversely across the tubular passageway at one side oi the valve element, a pair of arms joined at one end to spaced portions of the valve element at opposite sides of the pivot elements and both on the same side of the valve element, and at their free ends pivotally connected to the pivot elements, and constituting the sole means of support for the valve in the passageway whereby upon bending of the thermostaticY valve element in response to changes of fluid temperature in the passageway, the valve element will be concurrently transversely and longitudinally with respect to said tube rocked around the pivot elementsto variably inclined positions in the passageway by a pull effected upon one armfand a thrust upon the other to correspondingly vary the iiuid ilow rate therethrough, v

7. In a thermostatically operable valve device, a frame -comprising a tubular passageway, a `bimetal valve element in the passageway bendable responsive to changes of temperature of fluid therein, a pair of spaced pivot elements ilxedly supported on the frame and extending transversely across the tubular passageway at one side-of the valve element, a pair of arms joined at one end to spaced portions of the valve element at opposite sides ot the pivot elements and both on the same side of the valve element, and at their free ends pivotally connected to the pivot elements and constituting the sole means of support for the valve element, whereby upon bending of the thermostatic valve element in response to temperature changes of iluid in the passageway, the

valve element will be bodily rocked around the pivot elements by a pull eiected upon one arm and a thrust upon the other to variably incline the valve element in the passageway to correspondingly vary the fluid now rate therethrough, and adjusting means to adjustably rotate a pivot element about an eccentric axis to adjust the position of the valve element for a given Huid temperature.

8. In a thermally responsive valve constructionl a frame providing a tubular fluid ilow passageway, a thermostatic valve element responsive to bend upon a change of temperature of iluid in the passageway and having spaced portions thereof pivotally connected to the tube on spaced pivot axes supported stationary relative to the frame to cause the valve element to move concurrently longitudinally pand transversely with respect to said tube around the pivot axes upon bending to variably control flow ofY fluid through the passageway responsive to changes of temperature of the iiuid, and means to adjustably change the relative position of the said'pivot axes to adjust the position of the valve element for a given temperature.

9. In a thermally responsive valve construction, a frame providing a tubular fluid flow passageway, a bimetallic thermostatic element responsive to bend upon a change of temperature of fluid in the passageway and having spaced portions thereof pivotally connected to the tube on spaced pivot axes supported stationary relative to .the frame, to cause the valve element to move concurrently transverselyl and longitudinally with relspect to said tube around the pivot axes upon bending to variably control ow of iluid through the passageway responsive to changes oi.' temperature of the fluid, and means to adjustably change the positions of the xed axes relative to each other and to the frame to adjust the position oi the valve for a given temperature.

WALTER 'SABIN ROOT, Jn. 

